Police discovered a sophisticated grow operation Tuesday in the 1800 block of Kagehiro Drive, where authorities found 475 mature marijuana plants that would have yielded about $240,000 of street-level marijuana, officers said. Authorities also found grow equipment and a bypassed power line, which caused an estimated loss of more than $30,000 to Pacific Gas and Electric Co., police said. Hai Truong Nguyen, 31, who has connections to the Tracy and San Jose areas, is wanted in connection with the investigation, authorities said.

In an unrelated incident Tuesday, officers responding to a reported residential burglary said they contacted three suspicious people in the 1600 block of Smokey Lane. Xi Hong Chen, 28, Jimmy Zhaoming Tang, 21, and Yueyang Liang, 22, all of San Francisco, were arrested when they were found in possession of a large quantity of marijuana.

A search of the residence the men were targeting showed signs of another large marijuana-growing operation, police said. Authorities obtained a search warrant and found another highly sophisticated, multistage grow yielding about 800 marijuana plants in different stages of maturity. The plants could have produced about $400,000 worth of street-level marijuana, police said. A bypassed power line in the home resulted in an estimated loss of $20,000 to PG&E, authorities said.

On Wednesday, police searched a home in the 3700 block of Norfolk Drive. Inside, officers discovered a marijuana-growing operation partially set up, authorities said. Eighty-five marijuana plants were seized, police said. Ahn The Ngo, 29, and Hieu Cong Nguyen, 19, are wanted in connection with the case, authorities said. Both have ties to the San Jose area, police said.

LATHROP - Deputies arrested three people on a variety of charges at noon Thursday after responding to a report of a suspicious person in the 1600 block of Derby Lane, authorities said.

A man matching the description of the suspicious person fled on foot when deputies tried to approach him. He was found hiding in a parked car with two other occupants, authorities said. Inside the vehicle, deputies found a loaded handgun, a glass methamphetamine pipe and a fake California driver's license, authorities said.

Daniel Escobedo Jr., 29, was arrested on suspicion of being a felon in possession of a firearm, carrying a concealed firearm and possession of a loaded firearm, authorities said.

Nina Gordon, 26, was arrested on suspicion of carrying a concealed firearm and possession of a loaded firearm, police said.

Casey Carpenter, 21, was arrested on suspicion of possession of a deceptive identification document and possession of drug paraphernalia, authorities said.

The man was sitting in his black 1992 BMW 325i near North San Joaquin and East Arcade streets about 10:45 a.m. when the carjacker pulled up in a four-door Nissan Maxima driven by another man, police said. The carjacker, known to the victim as J.J., approached the BMW with a silver handgun and ordered the victim out of his car. The carjacker then drove south on North San Joaquin Street, authorities said.

The carjacker was described as a Latino man 36 to 38 years old with shoulder-length black hair, bad acne on his face, a black Raiders sweatshirt and jeans shorts, police said. The driver of the Maxima was described as a Latino man, authorities said.

The stolen BMW, license plate No. 4SUF885, has stock rims and tires, slightly tinted windows, no rearview mirror and a dent under each taillight, officers said.